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Finding the Fourth Proportional to 118,980.48, 164,191.92 and 65,265.64

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Solution

The fourth proportional to 118,980.48, 164,191.92 and 65,265.64 is: 90,065.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,980.48 : 164,191.92 = 65,265.64 : x
  2. Step 2: Convert to fraction form
    118,980.48/164,191.92 = 65,265.64/x
  3. Step 3: Cross multiply
    118,980.48x = 164,191.92 × 65,265.64
  4. Step 4: Simplify right side
    118,980.48x = 10,716,090,741.63
  5. Step 5: Solve for x
    x = 10,716,090,741.63/118,980.48
  6. Step 6: Final answer
    x = 90,065.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.